Do the top right clips hold 30-06/8mm Mauser size rims? I would have sworn they were Broomhandle Mauser clips, but if they're bigger than a 9mm/7.62x25 base, then they wouldn't be.
The reason I said that the lower middle clips with the flat back look like early Argentine Mauser clips (7.65 Argentine) was because I had some once that looked just like that, and that's what they were.
The last ones, the mystery Mannlicher clips, are too curved to be Carcano clips. I have several sitting on my desk in front of me. Do a google image search for "Dutch Mannlicher clips", and I think you'll see what they are.